PCM4108

SBAS354 − JUNE 2005

www.ti.com

3

ELECTRICAL CHARACTERISTICS

All parameters are specified at TA = +25°C with VCC = +5V, VDD = +3.3V, and a measurement bandwidth from 10Hz to 20kHz, unless otherwise

noted. System clock frequency is equal to 256fS for Single and Dual Rate sampling modes, and 128fS for Quad Rate sampling mode.

PCM4108

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

RESOLUTION

24

Bits

DATA FORMAT

Audio data formats

Left or Right Justified, I2S, and TDM

Audio data word length

16

24

Bits

Binary data format

Two’s Complement Binary, MSB First

CLOCK RATES AND TIMING

Single rate sampling mode

6.144

36.864

MHz

System clock frequency

fSCKI Dual rate sampling mode

13.824

36.864

MHz

System clock frequency

fSCKI

Quad rate sampling mode

13.824

36.864

MHz

Single rate sampling mode

24

54

kHz

Sampling frequency

fS Dual rate sampling mode

54

108

kHz

Sampling frequency

fS

Quad rate sampling mode

108

216

kHz

SPI port data clock

fCCLK

24

MHz

SPI port data clock high time

tCCLKH

15

ns

SPI port data clock low time

tCCLKL

15

ns

DIGITAL INPUT/OUTPUT

Input logic level

VIH

2.0

V

Input logic level

VIL

0.8

V

Input logic current

IIH

VIN = VDD

1

10

µA

Input logic current

IIL

VIN = 0V

1

−10

µA

Output logic level

VOH

IOH = −2mA

2.4

V

Output logic level

VOL

IOH = +2mA

0.4

V

ANALOG OUTPUTS

Full-scale output voltage, differential

RL = 600Ω

6.15

VPP

Bipolar zero voltage

2.5

V

Output impedance

5

Ω

Switched capacitor filter frequency response

f = 20kHz, all sampling modes

−0.2

dB

Gain error

0.5

% FSR

Gain mismatch, channel-to-channel

0.6

% FSR

Bipolar zero error

1

mV

VCOM1 and VCOM2 output voltage

VCC = +5V

2.5

V

VCOM1 and VCOM2 output current

200

µA